Results 161 to 170 of about 708 (186)

Developmental Anatomy and Morphology of the Ovule and Seed of Heliconia (Heliconiaceae, Zingiberales)

Plant Biology, 2006
The developmental anatomy and morphology of the ovule and seed in several species of Heliconia were investigated as part of an embryological study of the Heliconiaceae and to provide a better understanding of their relationships with the other families of the Zingiberales.
Daniela Guimarães Simão, Vera Lucia Scatena, F Bouman   +2 more
exaly   +5 more sources

Anther development, microsporogenesis and microgametogenesis in Heliconia (Heliconiaceae, Zingiberales)

Flora - Morphology, Distribution, Functional Ecology of Plants, 2007
Abstract Anther development, microsporogenesis and microgametogenesis in several species of Heliconia were investigated as part of a complementary embryological study of the Heliconiaceae. All studied Heliconia species present bithecate and tetrasporangiate anthers with fertile pollen grains; only H.
Simao, Daniela Guimaraes, Scatena, Vera Lucia, Bouman, Ferry   +2 more
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Heliconiaceae

exaly   +3 more sources

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Pollen-connecting threads inHeliconia (Heliconiaceae)

Plant Systematics and Evolution, 1995
InHeliconia thread-like structures connecting the pollen grains are described. These threads are decay products of the walls separating the pollen chambers, and products of the rupture of the mature anthers in the stomium region. The pliable cell threads mix with the pollen and entangle individual grains to form aggregates. This ensures that the pollen
Wilhelm Barthlott, Barthlott Wilhelm
exaly   +2 more sources

Heliconiaceae

, 1998
L. Andersson
openaire   +2 more sources

Heliconiaceae (Heliconia Family)

1977
exaly   +2 more sources

Wickerhamiella pagnoccae sp. nov. and Candida tocantinsensis sp. nov., two ascomycetous yeasts from flower bracts of Heliconia psittacorum (Heliconiaceae)

International Journal of Systematic and Evolutionary Microbiology, 2012
Two novel yeast species were isolated from nectar of flower bracts of Heliconia psittacorum (Heliconiaceae) collected in a Cerrado ecosystem in the state of Tocantins, northern Brazil. Wickerhamiella pagnoccae sp.
Anne C Barbosa, Paula B Morais, Luiz Henrique Rosa   +2 more
exaly   +2 more sources

Effects of Nectar Removal on Nectar Accumulation in Flowers of Heliconia imbricata (Heliconiaceae)

Biotropica, 1988
exaly   +2 more sources

ULTRASTRUCTURE OF EXINE‐LESS POLLEN: HELICONIA (HELICONIACEAE)

American Journal of Botany, 1978
Pollen of Heliconia and many of its relatives in the Zingiberales is virtually devoid of a conspicuous, protective exine. The exine is relegated to a few spinules and a thin, electron‐dense layer (0.08 μm), whereas the intine can be up to 100 times as thick (8 μm) and structurally complex.
W. John Kress, Donald E. Stone, Susan C. Sellers   +2 more
openaire   +1 more source